The crime of sexual intercourse or cohabitation between a man and woman who are related to each other within the degrees wherein marriage is prohibited by law. Incestuous adultery. The elements of this offense are that defendant, being married to one person, has had sexual intercourse with another related to the defendant within the prohibited degrees. Cook v. State, 11 Ga. 53, 56 Am. Dec. 410. Incestuous bastardy. Incestuous bastards are those who are produced by the illegal connection of two persons who are relations within the degrees prohibited by law. Civ. Code La. art 183.